package com.kuang.bq;


import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;

/**
 * @author luomingliang
 * @date 2021/5/24 21:22
 */
public class SynchronousQueueTest {

    public static void main(String[] args) {
        /**
         * 同步队列
         * 和其他的BlockingQueue不一样，SynchronousQueue不存储元素
         * put了一个元素，必须从里面先take取出来，否则不能在put进去值
         */
        BlockingQueue<String> queue = new SynchronousQueue<>();
        new Thread(()->{
            try {
                System.out.println(Thread.currentThread().getName()+" PUT 1");
                queue.put("1");
                System.out.println(Thread.currentThread().getName()+" PUT 2");
                queue.put("2");
                System.out.println(Thread.currentThread().getName()+" PUT 3");
                queue.put("3");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "T1").start();

        new Thread(()->{
            try {
                TimeUnit.SECONDS.sleep(1);
                System.out.println(Thread.currentThread().getName()+" GET "+queue.take());
                TimeUnit.SECONDS.sleep(1);
                System.out.println(Thread.currentThread().getName()+" GET "+queue.take());
                TimeUnit.SECONDS.sleep(1);
                System.out.println(Thread.currentThread().getName()+" GET "+queue.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }, "T2").start();
    }
}
